Saihemei 12V Under-Dash AC 13700 BTU
#1 in Under-dashFull review
The cheapest under-dash kit, with heating, but a 13,700 BTU claim and nothing else to check it against.
Amazon $358.99$358.99
The Saihemei 12V Under-Dash AC 13700 BTU is the better parking air conditioner overall, rated 3.1 to 2.7. The Saihemei 12V Under-Dash AC 13700 BTU leads on value. The Saihemei 12V Under-Dash AC 13700 BTU costs $101 less ($358.99 vs $459.99).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Aspligo 12V Under-Dash AC and Heater
#3 in Under-dashFull review
An under-dash kit that also heats from engine coolant; its 575 W rating fits a 10,000 BTU claim better than most.
Amazon $459.99$459.99
Which should you buy?
- Choose the Saihemei 12V Under-Dash AC 13700 BTU for value ($35.90 per 1,000 BTU ($358.99, 10,000 BTU credited of 13,700 claimed) vs $72.73 per 1,000 BTU ($459.99, 6,325 BTU credited of 10,000 claimed)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under-dash parking air conditioner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Saihemei 12V Under-Dash AC 13700 BTU | Aspligo 12V Under-Dash AC and Heater |
|---|---|---|
| Overall rating | 3.1/5 | 2.7/5 |
| Value 35% | 69 $35.90 per 1,000 BTU ($358.99, 10,000 BTU credited of 13,700 claimed) | 8 $72.73 per 1,000 BTU ($459.99, 6,325 BTU credited of 10,000 claimed) |
| Efficiency 20% | 50 input power not published (neutral score used) | 100 17.4 BTU claimed per watt in (575 W), above what a battery-powered compressor delivers, so the claim is not credited further |
| Noise 15% | 80 45 dB listed for the indoor unit | 50 noise rating not published (neutral score used) |
| Features 20% | 0 none listed | 25 1 of 4: low-voltage cutoff |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Saihemei 12V Under-Dash AC 13700 BTU | Aspligo 12V Under-Dash AC and Heater | |
|---|---|---|
| Cooling and power | ||
| Claimed cooling | 13,700 BTU | 10,000 BTU |
| Supply voltage | 12 V | 12 V |
| Input power | - | 575 W |
| Rated current | - | 60 A |
| Heating | Yes | Yes |
| Build | ||
| Layout | Under-dash, one unit | Under-dash, one unit |
| Ships charged with refrigerant | - | No |
| Controls, noise and warranty | ||
| Low-voltage cutoff | - | Yes |
| Indoor noise | 45 dB | - |